From 95ac3b1daeaa7d40d49fa2e0bdef46346c2996d5 Mon Sep 17 00:00:00 2001 From: Connor Abbott Date: Tue, 11 Aug 2015 16:16:42 -0700 Subject: [PATCH] i965/fs: don't propagate cmod when the exec sizes differ This can happen when the source of the compare was split by the SIMD lowering pass. Potentially, we could allow the case where the exec size of scan_inst is larger, and scan_inst has the right quarter selected, but doing that seems a little more risky. v2: Merge the bail condition into the the previous if/break block (Matt) Reviewed-by: Iago Toral Quiroga Reviewed-by: Matt Turner --- src/mesa/drivers/dri/i965/brw_fs_cmod_propagation.cpp | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/src/mesa/drivers/dri/i965/brw_fs_cmod_propagation.cpp b/src/mesa/drivers/dri/i965/brw_fs_cmod_propagation.cpp index 8fdc959f992..7c01f1e3d62 100644 --- a/src/mesa/drivers/dri/i965/brw_fs_cmod_propagation.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs_cmod_propagation.cpp @@ -90,7 +90,8 @@ opt_cmod_propagation_local(bblock_t *block) foreach_inst_in_block_reverse_starting_from(fs_inst, scan_inst, inst) { if (scan_inst->overwrites_reg(inst->src[0])) { if (scan_inst->is_partial_write() || - scan_inst->dst.reg_offset != inst->src[0].reg_offset) + scan_inst->dst.reg_offset != inst->src[0].reg_offset || + scan_inst->exec_size != inst->exec_size) break; /* CMP's result is the same regardless of dest type. */ -- 2.30.2